Master overhaul kit for the Toyota U250E five-speed automatic: friction plates, steels, and the full gasket and seal set for Camry, Highlander, and RAV4.
A four-cylinder Camry or Solara that flares on the 2-3 shift, slips when you pull onto the highway, or clunks on the 5-4 downshift is a common U250E story, and once the fluid smells burnt the fix is a full overhaul. This master rebuild kit carries what that job uses up: a complete set of friction plates and steel plates for every clutch and brake pack, the valve body separator gaskets, the pan gasket, the front and side seals, and the full set of piston seals and O-rings. Buy it once and the transaxle goes back together with no original rubber or friction material inside.
The U250E is the Aisin-built five-speed front-wheel-drive automatic Toyota paired with its 2.4L four-cylinder. Sonnax's apply chart for this family shows it shifting with four clutches (C0 through C3), three brakes (B1 through B3) and two one-way clutches, all controlled by linear solenoids in the valve body. Each gear depends on two or more of those packs holding at once, so when one pack glazes or a piston seal leaks, the computer sees the slip as a ratio error and the shift quality falls apart. Replacing every friction, steel and seal together restores even clamping across all packs.
Sonnax ties a 5-4 clunk to a C1 piston whose rubber has come unbonded, and a 2-3 flare to worn sealing rings on the rear cover that also starve the C0 clutch. Both are inside-the-case problems that a valve body alone will not cure. Start with a fluid check and a pan inspection, then scan for ratio and solenoid codes. Our guide to Aisin slipping under load and the flare versus slip breakdown explain how to tell a pressure problem from burnt clutches.
The listing catalogs this kit broadly: 2003-2009 Camry, 2007-2013 Corolla, 2007-2013 Highlander, 2005-2014 RAV4, 2004-2008 Solara and 2009 Matrix, across several engines. Be careful here. Toyota put different transaxles in those same model lines, and the U250E itself was used in the 2005-2009 four-cylinder Camry, 2006-2009 four-cylinder Solara, 2009-2014 Matrix 2.4L, 2009-2010 Corolla XRS and the 2009-2010 Pontiac Vibe 2.4L. V6 Camrys, Highlanders and most RAV4s use other units with their own kits. Check the transmission code on your build label or the case before ordering, or send us your year and VIN. More Aisin and Toyota parts are in our Aisin transmission collection.
This is the soft-parts side of the job. Drums, planetaries, bushings, the pump and the torque converter are not in the box, so inspect them on the bench and order what fails.
| Transmission | |
| OE reference | |
| Kit contents | |
| Camry | |
| Corolla | |
| Highlander | |
| RAV4 | |
| Solara | |
| Matrix |
Doing this repair right usually means replacing these at the same time. Same transmission, ships together.
Not by default. The U250E was used with the four-cylinder engines; V6 Camrys and most Highlanders use different transaxles. Read the transmission code on your build label or case, or send us the year and VIN, before ordering.
Friction plates, steel plates, valve body gaskets, the pan gasket, front and side seals, and the piston seals and O-rings. It does not include bushings, drums, the pump, solenoids, a filter or a torque converter.
A common cause is the C1 piston rubber separating from the piston. It is replaced during an overhaul; this kit renews the friction and sealing parts around it, so inspect the piston itself on the bench.
Toyota WS (World Standard) ATF. Do not substitute Type T-IV or a multi-vehicle fluid; the shift calibration is built around WS.
Yes. Reset the learned values with a scan tool, then drive through 10 to 15 complete upshift and downshift cycles so the computer adapts to the new clutches.
